CN109391532A - A kind of radio transmitting device, radio transmitting method and computer readable storage medium - Google Patents
A kind of radio transmitting device, radio transmitting method and computer readable storage medium Download PDFInfo
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- CN109391532A CN109391532A CN201710659762.6A CN201710659762A CN109391532A CN 109391532 A CN109391532 A CN 109391532A CN 201710659762 A CN201710659762 A CN 201710659762A CN 109391532 A CN109391532 A CN 109391532A
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- network expansion
- expansion node
- address
- virtual radio
- data message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/462—LAN interconnection over a bridge based backbone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
Abstract
The invention discloses a kind of radio transmitting device, radio transmitting method and computer readable storage mediums, including at least two virtual radio interfaces and at least one network expansion node is pre-created；The wireless data message for parsing each virtual radio interface, whether the virtual radio interface for judging to receive the wireless data message is the associated virtual radio interface of the network expansion node；If it is not, being transmission address with the associated virtual radio interface of the network expansion node, being to receive address to reconstruct the wireless data message, and the wireless data message of reconstruct is sent to the network expansion node with the network expansion node.The present invention is by being sent to the network expansion node for the wireless data message reconstruct of the node of each virtual radio interface conjunctionn, wireless data message is realized across forwarding between BSS, the distribution for having expanded wireless network solves the problems, such as that traditional WDS cipher mode is single.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of radio transmitting devices and radio transmitting method.
Background technique
With the development of the communication technology and Internet technology, WiFi (Wireless Fidelity) technology by high speed,
Convenient, low-cost unique advantage has gradually obtained extensive cognition and has approved.WiFi chip system is to realize WiFi technology
Most crucial carrier.
Currently, the coverage area for expanding WiFi network has become the urgent need of many users.Wireless distribution system
(Wireless Distribution System, WDS) is a kind of wireless network expanding method more common at present, is realized
Multiple wireless networks are interrelated, constitute the function of the wireless network of an entirety.Fig. 1 is typical WDS network topology structure
Figure, as shown in Figure 1, access point (Access Point, AP) 1 and website (Station, STA) 2 are wirelessly associated with；AP2
It establishes and bridges with STA1, constitute bridge (Bridge, BR) 1；AP1 is associated with STA1, and AP1 can possess bridge BR1 as main AP
Routing iinformation；AP2 is associated with STA3, thus, main AP has the routing letter of all nodes in this typical WDS network
Breath, BR1 are used as from AP, possess the routing iinformation of all nodes in main AP and present networks.WDS technology can expand wireless network
Coverage area, still, it has the following disadvantages:
(1) data forwarding in WDS technology is limited in basic service set (Basic Service Set, BSS) network,
It cannot achieve the data forwarding between dereferenced network；
(2) cipher mode of all devices in WDS technical requirements network is identical as code key, and such security mechanism has
Certain limitation.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of radio transmitting device and radio transmitting methods, can
It realizes across the wireless data message forwarding between BSS and supports multifarious cipher mode.
In order to reach the object of the invention, the technical solution of the embodiment of the present invention is achieved in that
The embodiment of the invention provides a kind of radio transmitting methods, comprising:
Radio transmitting device is pre-created at least two virtual radio interfaces and at least one network expansion node, institute is arranged
Network expansion node is stated for receiving sending with the node of each virtual radio interface conjunctionn and filling by the wireless transmission
Set the wireless data message that reconstruct is sent；
The radio transmitting device parses the wireless data message of each virtual radio interface, judges to receive the nothing
Whether the virtual radio interface of line data message is the associated virtual radio interface of the network expansion node；
If not the associated virtual radio interface of the network expansion node, the radio transmitting device is with the network
Expand the associated virtual radio interface of node be send address, be that receive address reconstruct described wireless with the network expansion node
Data message, and the wireless data message of reconstruct is sent to the network expansion node.
Further, at least two virtual radios interface is following any one: the access of at least two virtual radios
Point AP, at least two virtual radio site STAs, at least one virtual radio access point AP and at least one virtual radio website
STA。
Further, the radio transmitting device is to send ground with the associated virtual radio interface of the network expansion node
Location is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the type of the associated virtual radio interface of the network expansion node and the class of the network expansion node
The frame control field of the wireless data message is arranged in type.
Further, the radio transmitting device is to send ground with the associated virtual radio interface of the network expansion node
Location is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the encryption between the associated virtual radio interface of the network expansion node and the network expansion node
Mode, encrypted fields and cryptographic check information generate the wireless data message of encryption.
Further, the frame format of the wireless data message of the reconstruct include: frame control field, Duration field,
1 field of address, 2 field of address, 3 field of address, frame number field, message content field and frame check field.
Further, when the network expansion node be wireless site STA and with the associated void of network expansion node
When quasi- wireless interface is virtual radio access point AP, the radio transmitting device is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field of the wireless data message of the radio transmitting device setting reconstruct is FROMDS type, address 1
Field stores the MAC Address of the network expansion node, and 2 field of address and 3 field of address are stored and the network expansion section
The MAC Address of the associated virtual radio interface of point, reconstructed frame sequence number field copy the message content of received wireless data message
Reconstruct is generated according to the mac frame head information and message content field reconstructed frame check field of reconstruct message to message content field
Wireless data message.
Further, when the network expansion node be wireless access point AP and with the associated void of network expansion node
When quasi- wireless interface is virtual radio site STA, the radio transmitting device is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field of the wireless data message of the radio transmitting device setting reconstruct is TODS type, 1 word of address
Section stores the MAC Address of the network expansion node, the storage of 2 field of address and the network expansion node with 3 field of address
The MAC Address of associated virtual radio interface, reconstructed frame sequence number field copy the message content of received wireless data message extremely
Message content field generates reconstruct according to the mac frame head information and message content field reconstructed frame check field of reconstruct message
Wireless data message.
The embodiment of the invention also provides a kind of computer readable storage medium, deposited on the computer readable storage medium
Wireless transmission program is contained, is realized as described in any one of claims 1 to 4 when the wireless transmission program is executed by processor
Radio transmitting method the step of.
The embodiment of the invention also provides a kind of radio transmitting device, including creating unit, virtual interface administrative unit, stand
Point administrative unit and reconstruct transmission unit, in which:
Creating unit, at least two virtual radio interfaces to be pre-created and at least one network expansion node is arranged,
The network expansion node is used to receive sending with the node of each virtual radio interface conjunctionn and sends by the reconstruct
The wireless data message that Cell Reconstruction is sent, the virtual radio interface created is exported to virtual interface administrative unit, will be each
The nodal information of a virtual radio interface conjunctionn is stored to site management unit；
Reconstruct transmission unit judges described in reception for parsing the wireless data message of each virtual radio interface
Whether the virtual radio interface of wireless data message is the associated virtual radio of network expansion node in the site management unit
Interface；It is associated virtual with the network expansion node if not the associated virtual radio interface of the network expansion node
Wireless interface is transmission address, is to receive address to reconstruct the wireless data message, and will reconstruct with the network expansion node
Wireless data message be sent to the network expansion node；
Virtual interface administrative unit, for storing the information of several virtual radio interfaces；
Site management unit, for storing and the nodal information of each virtual radio interface conjunctionn.
Further, at least two virtual radios interface is following any one: the access of at least two virtual radios
Point AP, at least two virtual radio site STAs, at least one virtual radio access point AP and at least one virtual radio website
STA。
Further, the reconstruct transmission unit is to send with the associated virtual radio interface of the network expansion node
Address is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the type of the associated virtual radio interface of the network expansion node and the class of the network expansion node
The frame control field of the wireless data message is arranged in type.
Further, the reconstruct transmission unit is to send with the associated virtual radio interface of the network expansion node
Address is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the encryption between the associated virtual radio interface of the network expansion node and the network expansion node
Mode, encrypted fields and cryptographic check information generate the wireless data message of encryption.
Technical solution of the present invention has the following beneficial effects:
Radio transmitting device and radio transmitting method provided by the invention, by by the section of each virtual radio interface conjunctionn
The wireless data message reconstruct of point is sent to the network expansion node, realizes wireless data message across forwarding between BSS, opens up
The distribution of wireless network has been opened up, and has allowed the website of AP limitation and other AP or station in WDS network in WDS network
Point carries out data forwarding；Solve the problems, such as that traditional WDS cipher mode is single by reconstructing wireless data message simultaneously.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is traditional WDS network topology structure schematic diagram；
Fig. 2 is a kind of flow diagram of radio transmitting method of the embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of radio transmitting device of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the chip system of the radio transmitting device of first preferred embodiment of the invention；
Fig. 5 is the WiFi chip system architecture schematic diagram of the radio transmitting device of first preferred embodiment of the invention；
Fig. 6 is the general three address medias MAC layer of WiFi (Media Access Control, MAC) layer data message
Form schematic diagram；
Fig. 7 is the WDS network expansion cipher mode schematic diagram of third preferred embodiment of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
As shown in Fig. 2, a kind of radio transmitting method according to the present invention, includes the following steps:
Step 201: radio transmitting device is pre-created at least two virtual radio interfaces and at least one network is arranged and opens up
Node is opened up, the network expansion node is used to receive sending with the node of each virtual radio interface conjunctionn and passes through the nothing
The wireless data message that the reconstruct of line transmitting device is sent；
Further, at least two virtual radios interface is following any one: the access of at least two virtual radios
Point AP, at least two virtual radio site STAs, at least one virtual radio access point AP and at least one virtual radio website
STA。
Step 202: the radio transmitting device parses the wireless data message of each virtual radio interface, and judgement connects
Whether the virtual radio interface for receiving the wireless data message is the associated virtual radio interface of the network expansion node；
Step 203: if not the associated virtual radio interface of the network expansion node, the radio transmitting device with
The associated virtual radio interface of network expansion node is to send address, take the network expansion node as the reconstruct of reception address
The wireless data message, and the wireless data message of reconstruct is sent to the network expansion node.
Further, the radio transmitting device is to send ground with the associated virtual radio interface of the network expansion node
Location is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the type of the associated virtual radio interface of the network expansion node and the class of the network expansion node
The frame control field of the wireless data message is arranged in type.
Further, the radio transmitting device is to send ground with the associated virtual radio interface of the network expansion node
Location is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the encryption between the associated virtual radio interface of the network expansion node and the network expansion node
Mode, encrypted fields and cryptographic check information generate the wireless data message of encryption.
Further, the frame format of the wireless data message of the reconstruct include: frame control field, Duration field,
1 field of address, 2 field of address, 3 field of address, frame number field, message content field and frame check field.
Further, when the network expansion node be wireless site STA and with the associated void of network expansion node
When quasi- wireless interface is virtual radio access point AP, the radio transmitting device is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field of the wireless data message of the radio transmitting device setting reconstruct is FROMDS type, address 1
Field stores the MAC Address of the network expansion node, and 2 field of address and 3 field of address are stored and the network expansion section
The MAC Address of the associated virtual radio interface of point, reconstructed frame sequence number field copy the message content of received wireless data message
Reconstruct is generated according to the mac frame head information and message content field reconstructed frame check field of reconstruct message to message content field
Wireless data message.
Further, when the network expansion node be wireless access point AP and with the associated void of network expansion node
When quasi- wireless interface is virtual radio site STA, the radio transmitting device is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field of the wireless data message of the radio transmitting device setting reconstruct is TODS type, 1 word of address
Section stores the MAC Address of the network expansion node, the storage of 2 field of address and the network expansion node with 3 field of address
The MAC Address of associated virtual radio interface, reconstructed frame sequence number field copy the message content of received wireless data message extremely
Message content field generates reconstruct according to the mac frame head information and message content field reconstructed frame check field of reconstruct message
Wireless data message.
The invention also discloses a kind of computer readable storage medium, nothing is stored on the computer readable storage medium
Line transfer program, the wireless transmission program realizes the radio transmitting method as described in any of the above item when being executed by processor
Step.
As shown in figure 3, a kind of radio transmitting device according to the present invention, including creating unit, virtual interface administrative unit,
Site management unit and reconstruct transmission unit, in which:
Creating unit, at least two virtual radio interfaces to be pre-created and at least one network expansion node is arranged,
The network expansion node is used to receive sending with the node of each virtual radio interface conjunctionn and sends by the reconstruct
The wireless data message that Cell Reconstruction is sent, the virtual radio interface created is exported to virtual interface administrative unit, will be each
The nodal information of a virtual radio interface conjunctionn is stored to site management unit；
Reconstruct transmission unit judges described in reception for parsing the wireless data message of each virtual radio interface
Whether the virtual radio interface of wireless data message is the associated virtual radio of network expansion node in the site management unit
Interface；It is associated virtual with the network expansion node if not the associated virtual radio interface of the network expansion node
Wireless interface is transmission address, is to receive address to reconstruct the wireless data message, and will reconstruct with the network expansion node
Wireless data message be sent to the network expansion node；
Virtual interface administrative unit, for storing the information of several virtual radio interfaces；
Site management unit, for storing the nodal information of each virtual radio interface conjunctionn.
Further, at least two virtual radios interface is following any one: the access of at least two virtual radios
Point AP, at least two virtual radio site STAs, at least one virtual radio access point AP and at least one virtual radio website
STA。
Further, the reconstruct transmission unit is to send with the associated virtual radio interface of the network expansion node
Address is that reception address reconstructs the wireless data message with the network expansion node, further includes:
It is arranged according to the type of the associated virtual radio interface of the network expansion node and the network expansion node
The frame control field of the wireless data message.
Further, the reconstruct transmission unit is to send with the associated virtual radio interface of the network expansion node
Address is that reception address reconstructs the wireless data message with the network expansion node, further includes:
According to the encryption between the associated virtual radio interface of the network expansion node and the network expansion node
Mode, encrypted fields and cryptographic check information generate the wireless data message of encryption.
Further, the frame format of the wireless data message of the reconstruct include: frame control field, Duration field,
1 field of address, 2 field of address, 3 field of address, frame number field, message content field and frame check field.
Further, when the network expansion node be wireless site STA and with the associated void of network expansion node
When quasi- wireless interface is virtual radio access point AP, the reconstruct transmission unit is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field that the wireless data message of reconstruct is arranged is FROMDS type, and 1 field of address stores the network
The MAC Address of node is expanded, 2 field of address and 3 field of address are stored and the associated virtual radio of network expansion node
The MAC Address of interface, reconstructed frame sequence number field copy the message content of received wireless data message to message content field,
According to the mac frame head information and message content field reconstructed frame check field of reconstruct message, the wireless data message of reconstruct is generated.
Further, when the network expansion node be wireless access point AP and with the associated void of network expansion node
When quasi- wireless interface is virtual radio site STA, the reconstruct transmission unit is with the associated virtual nothing of the network expansion node
Line interface be send address, be to receive address to reconstruct the wireless data message with the network expansion node, specifically include:
The frame control field that the wireless data message of reconstruct is arranged is TODS type, and 1 field of address is deposited with 3 field of address
Put the MAC Address of the network expansion node, the storage of 2 field of address and the associated virtual radio interface of the network expansion node
MAC Address, reconstructed frame sequence number field copies the message content of received wireless data message to message content field, according to
The mac frame head information and message content field reconstructed frame check field for reconstructing message, generate the wireless data message of reconstruct.
The embodiment of the invention also provides several preferred embodiments, and the present invention is further expalined, but is worth note
Meaning, the preferred embodiment are intended merely to preferably describe the present invention, do not constitute and improperly limit the present invention.Following
Each embodiment can be individually present, and the technical characterstic in different embodiment can combine to combine in one embodiment and make
With.
The framework of the chip system of this preferred embodiment is as shown in figure 4, be broadly divided into baseband portion and radio frequency part.Radio frequency
Part realizes the conversion function of baseband signal and radiofrequency signal by radio frequency control unit (RF_CTRL), and realization is received from antenna
Send out wireless signal.Baseband portion mainly by physical layer element (PHY_HW), MAC layer unit and applies layer unit (USR_API)
Composition.Physical layer element carries out physical layer management, and main comprising debugging demodulation function, analog conversion function realizes baseband signal
The conversion function of conversion and physical layer message and MAC layer message with physical layer message, and cipher mode, encrypted word
Section is converted to the function of encryption message, is the MAC layer message for carrying encrypted fields, cryptographic check field the decryption of encryption message
Function.Carry out using layer unit using layer-management, user can in unit editor, using user instruction, such as create an AP,
Create STA etc..MAC layer unit is mainly by MAC layer administrative unit (MM), receiving unit (RX), transmission unit (TX), virtual
Interface (VIF) administrative unit (VIF_MGMT), site management unit (STA_MGMT), WDS algorithm unit (WDS_ALG) and other
Administrative unit (OTHER) composition.MAC layer administrative unit mainly realizes the parsing and building and application layer, object of MAC layer message
Manage layer, the scheduling of MAC layer message and interactive function.Receiving unit realize receive physical layer MAC message and filtering, storage,
The function of reporting MAC layer message.Transmission unit mainly realizes the sequence of MAC layer message, filtering, downloading and MAC layer message is moved
Give the function of physical layer element.VIF administrative unit carries out content pipe for each virtual interface (VIF) of this system respectively
Reason, (each vif can only undertake a role to the index management type information realized to each VIF in the wireless network, both may be used
To use as access point (AP), can also be used as website (STA) use), MAC Address, BSSID, maximum transmission rate, maximum
The information such as strength of transmitted signals, all protocol modes, maximum space stream are managed.Site management unit is to being connected to this chip
The STA equipment or AP equipment of system carry out Content Management respectively, could support up 128 STA equipments or AP equipment while accessing this
Chip system, main realize are believed with the index management of this chip system associated STA or AP, the index management of affiliated VIF, networking
Number quality, MAC Address, cipher mode, encrypted fields, maximum transmission rate, maximum strength of transmitted signals, all protocol modes,
The information managements such as maximum space stream.WDS algorithm unit mainly realizes the addition of this chip system routing table, deletion, modifies, looks into
The functions such as inquiry, maintenance.Other administrative units mainly realize this chip system such as power saving management, channel management, interrupt management function
Energy.
Both can be interrelated between multiple VIF in this chip, for example hang on the same bridge, with other equipment or
Network interface card collectively constitutes a typical WDS network as shown in Figure 1；Can also be not interrelated each other with each VIF, it realizes as schemed
Wireless network of the invention shown in 5 expands scheme.
When this chip system receives the message of a certain network, radio frequency control unit converts the message in wireless network
At baseband signal, baseband signal is converted into physical layer message up sending again and is handled to MAC layer by physical layer element.MAC layer pipe
It manages unit and data parsing is carried out to the MAC layer message first, extract the letter such as heading, mac frame content, verification of the message
Breath.Then according to the STA or AP in MAC Address, type, index information and the site management unit in VIF administrative unit
The MAC layer message is reconstructed in the information such as MAC Address, index.Transmission unit is again ranked up the MAC layer message of reconstruct,
And transfer physical layer element to, MAC layer message is converted into physical layer message by physical layer element, and reconvert is at baseband signal.It penetrates
Baseband signal is finally converted to radiofrequency signal by frequency unit, and is sent in other networks, realizes dereferenced equipment, dereferenced net
Data forwarding function between network.
In this chip system, site management unit stores the information such as the cipher mode of each STA, encrypted fields.It should
Encryption information is first to be generated random number and then to negotiate to generate by each VIF and respectively associated STA or AP, therefore even if same
In a network, the code key that STA (or AP) networks is identical, and the encryption field information of STA (or AP) is not also identical.When this system connects
The message of the cipher mode A of certain website sending is received, the encryption information that the website and this system VIF negotiate is stored in station field signal
In unit, therefore MAC layer administrative unit can parse the encryption report according to information such as cipher mode, the encrypted fields of the website
Text obtains non-encrypted MAC layer message.Then MAC layer administrative unit can be according to the different cipher modes of other websites, to this
Non-encrypted MAC layer message is reconstructed, and constructs the encryption message for meeting the cipher mode.Transmission unit is the reconstruct message
Transfer physical layer element to, which is converted into physical layer message again by physical layer element, and reconvert is at baseband signal.Radio frequency list
Baseband signal is converted to radiofrequency signal by member, is finally sent in wireless medium, so that it is compatible to realize network expansion
The function of a variety of cipher modes solves the problems, such as that WDS cipher mode is single.
Preferred embodiment 1
As shown in figure 5, forwarding principle of the present embodiment by the data message in description BSS1 in BSS2, embodying this is
The difference of system and typical case's WDS wireless network expanding method.
Typical WDS network topological diagram is as shown in Figure 1, AP1 is wirelessly associated with STA2；AP2 and STA1 is established
Bridge joint constitutes bridge BR1.AP1 is associated with STA1, and main AP (AP1) can possess the routing iinformation of bridge BR1；AP2 and STA3 phase
Association, thus, main AP has the routing iinformation of all nodes in this typical WDS network, from AP (BR1) possess main AP with
And in present networks all nodes routing iinformation.Above method constitutes typical WDS network.
When using radio transmitting method of the invention, it is network expansion mode that this chip is arranged first, as shown in figure 5, this
System is based on more VIF administrative mechanisms, and wherein VIF1 is configured to STA2, and VIF2 is configured to AP2, and VIF3 is configured to STA3.Wherein
STA2 is associated with AP1, collectively constitutes BSS1 network with STA1；AP2 is associated with STA4, forms BSS2 network；AP3 and STA3
It is associated, form BSS3 network.STA4 associated with AP2 is arranged in order to describe the data that STA4 obtains STA1 in the present embodiment
For network expansion node.If it is desired to which STA1 can also obtain the data of STA4, then setting is also needed to be present in STA2 routing table
STA1 is network expansion node.When STA2 receives AP1 forwarding and source address is the non-encrypted data message of STA1, this chip system
The radiofrequency signal of the message is converted into baseband signal by the radio frequency control unit of system, and passes to physical layer element.Physical layer list
Member is converted to the baseband signal final MAC layer message, and passes to receiving unit.Receiving unit transmits the MAC message
MAC layer administrative unit is given, MAC layer administrative unit is parsed to the MAC layer message.MAC layer general data message format is such as
Shown in Fig. 6, FC indicates that frame control field, the received data frame of STA2 are from system (FROMDS) type, and ADD1 stores purpose
Address (MAC Address of STA2), ADD2 store BSSID (MAC Address of AP1), ADD3 storage source address (MAC of STA1
Location), payload is message content；FCS is check information.This system is repeater station by setting STA4, the data of BSS1
It is transmitted to BSS2, so that STA4 can be used as the data that monitoring node obtains BSS1 wireless network.
This chip system is different from typical case's WDS network expansion method, it can be achieved that across the BSS1 network of message, in BSS2 transfer
Hair.In BSS2, transmission source, the sending object of the message are changed.The message is reconstructed in MAC layer administrative unit: setting
Fc field is FROMDS type, and ADD1 stores the MAC Address of STA4, and ADD2 stores the MAC Address of AP2, and ADD3 stores AP2's
MAC Address reconstructs frame number (Seq-Cntrl) field, extracts the message content (Payload) for receiving message, is reported according to reconstruct
The mac frame head of text, Payload content reconstruct check field.Secondly, the MAC layer message of reconstruct is transferred to physics by transmission unit
Layer unit, physical layer element according to the maximum transmission rate of VIF administrative unit AP2, strength of transmitted signals, supported protocol mode,
The tenability information of STA4 in the ability informations such as maximum space stream and site management unit obtains minimum ability range set
It closes, and according to the limit of power set, MAC layer message is built into physical layer message, then physical layer message is converted to again
Baseband signal.Finally, baseband signal is converted to radiofrequency signal by radio frequency control unit, the STA4 being sent in BSS2 network is real
Forwarding capability now across BSS1 to BSS2 network.
In traditional WDS network, as shown in Figure 1, STA1 and STA3 can not if STA3 is a member of AP1 blacklist
Data forwarding is carried out by the WDS network.In the present embodiment, if STA4 is a member of AP1 blacklist, and STA2 is not AP1
A member of blacklist, then STA1 can be communicated with STA2, and STA4 can forward the number for obtaining STA1 by this chip system AP2
According to not limited by traditional WDS network, to realize the data forwarding function of STA1 to STA4.If AP1 is an exchange
Machine, STA4 obtain the permission that outer network data must have upper outer net by AP1, STA2, then STA4 can forward acquisition outer by AP2
The data of net, to achieve the purpose that obtain outer network data.
Preferred embodiment 2
As shown in figure 5, the present embodiment is forwarded in BSS3 by the data message in description BSS1, this system is embodied
Wireless network expanding method.
The network expansion condition of the present embodiment, part forward principle and operation similar to Example 1.This core is set first
Piece is network expansion mode, and after AP3 is associated with this chip system, and setting AP3 is the network expansion node of this chip system.
If it is desired to realize two-way converting, then also need to be arranged the network expansion node that STA1 is this chip system, to realize STA1
With the two-way converting of AP3.The radio frequency control cell translation that the non-encrypted data message of STA3 also passes through this chip system is base
Band signal, then MAC layer message is converted to by physical layer element, MAC layer administrative unit is then transferred to by receiving unit and is solved
Analysis.Difference is that the type of VIF is different, and the reconstruct mode of MAC layer message is also different.
MAC administrative unit obtains the information such as MAC Address, the BSSID of VIF2, then slave site management from VIF administrative unit
Obtain the MAC Address of STA3, the information such as STA index, encryption in unit, and carry out message reconstruct as follows: fc field is set
It is set to system-oriented (TODS) type, ADD1 stores BSSID content (MAC Address of AP3), and ADD2 storage source address be (STA3's
MAC Address), ADD3 stores destination address (MAC Address of AP3), message content is extracted, according to the mac frame head of reconstruct message, report
Literary reconstruction of content FCS check information.The reconstruct of physical layer message and the behavior of radio frequency control module and function and embodiment 1 are basic
It is identical, it repeats no more.Finally, the AP3 in BSS3 network receives the reconstruct message, the data of BSS1 to BSS3 network are completed
Forwarding capability.
It should be noted that being FROMDS type or TODS type, most of feelings according to 802.11 protocol configuration fc fields
When being transmitted to AP under condition, TODS=1 is set；When being transmitted to STA, FROMDS=1 is set.Here setting is to accord with
Close 80211 agreements of wifi；The case where there are FROMDS types and TODS type configuration into all ones or all zeroes, for example, wireless bridge
The FROMDS type and TODS type configuration for connecing device are that 2 STA are mutually closed in complete 1, IBSS network (self basic service set)
When connection, FROMDS type and TODS type configuration are full 0.
Preferred embodiment 3
The present embodiment describes the method and step that this system expands cipher mode.
As shown in fig. 7, STA1 is sent to the message of STA3 in network, first passes through cipher mode 1 (TKIP encryption) and be sent to
Intermediate node STA2 (VIF of this chip), then by AP2 (another VIF of this chip), using 2 (CCMP of cipher mode
Encryption) form be transmitted to STA3.
Network association during, will do it between AP and STA encryption certification, this chip system by cipher mode, encryption
Field and cryptographic check information are stored in site management unit.
STA2 receives the data message of cipher mode 1, first passes through radio frequency control unit radiofrequency signal and is converted to base band
Signal, then baseband signal is converted to by physical layer element by MAC layer signal, and be carrying encrypted word the decryption of encryption message
The MAC layer message of section, cryptographic check information.Subsequent receiving unit gives MAC layer administrative unit the message up sending after decryption, carries out
Packet parsing.MAC layer administrative unit passes through cryptographic check information first, verifies the correctness of the encryption message, if check information
Correctly, then it proves successful decryption, while extracting message content.Secondly, MAC layer administrative unit obtains mesh by WDS algorithm unit
Address routing iinformation and next node MAC Address.The present embodiment destination address is with next node
STA3.MAC layer administrative unit extracts cipher mode, encrypted fields and the cryptographic check letter of STA3 in slave site administrative unit again
Breath, is reconstructed message: in the present embodiment, according to the encrypted authentication information that AP2 and STA3 negotiate, by CCMP it is initial to
It measures (IV), expand vector (EIV) information, fill the encrypted fields position of MAC layer message；It is calculated simultaneously further according to message content information
MIC check information is filled in, and fills the cryptographic check position of MAC layer message.Then, physical layer element is according to MAC layer message
Encrypted fields, message content, cryptographic check information generate encryption message, and are converted to baseband signal.Finally, radio frequency control unit
Baseband signal is converted to radiofrequency signal, is sent to STA3 website, to realize the diversified function of network expansion cipher mode
Energy.
Radio transmitting device and radio transmitting method provided by the invention, by by the section of each virtual radio interface conjunctionn
The wireless data message reconstruct of point is sent to the network expansion node, realizes wireless data message across forwarding between BSS, opens up
The distribution of wireless network has been opened up, and has allowed the website of AP limitation and other AP or station in WDS network in WDS network
Point carries out data forwarding；Solve the problems, such as that traditional WDS cipher mode is single by reconstructing wireless data message simultaneously.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be instructed by program
Related hardware is completed, and described program can store in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, one or more integrated circuits also can be used to realize, accordingly in all or part of the steps of above-described embodiment
Ground, each module/unit in above-described embodiment can take the form of hardware realization, can also use the shape of software function module
Formula is realized.The present invention is not limited to the combinations of the hardware and software of any particular form.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of radio transmitting method characterized by comprising
Radio transmitting device is pre-created at least two virtual radio interfaces and at least one network expansion node, the net is arranged
Network expands node and is used to receive sending with the node of each virtual radio interface conjunctionn and passes through the radio transmitting device weight
The wireless data message that structure is sent；
The radio transmitting device parses the wireless data message of each virtual radio interface, judges to receive the no line number
It whether is the associated virtual radio interface of the network expansion node according to the virtual radio interface of message；
If not the associated virtual radio interface of the network expansion node, the radio transmitting device is with the network expansion
The associated virtual radio interface of node is to send address, take the network expansion node as the reception address reconstruct wireless data
Message, and the wireless data message of reconstruct is sent to the network expansion node.
2. radio transmitting method according to claim 1, which is characterized in that the radio transmitting device is opened up with the network
The exhibition associated virtual radio interface of node is to send address, take the network expansion node as the reception address reconstruct no line number
According to message, further includes:
It is set according to the type of the type of the associated virtual radio interface of the network expansion node and the network expansion node
Set the frame control field of the wireless data message.
3. radio transmitting method according to claim 1, which is characterized in that the radio transmitting device is opened up with the network
The exhibition associated virtual radio interface of node is to send address, take the network expansion node as the reception address reconstruct no line number
According to message, further includes:
According between the associated virtual radio interface of the network expansion node and the network expansion node cipher mode,
Encrypted fields and cryptographic check information generate the wireless data message of encryption.
4. radio transmitting method according to claim 1-3, which is characterized in that at least two virtual radio
Interface be following any one: at least two virtual radio access point AP, at least two virtual radio site STAs, at least one
Virtual radio access point AP and at least one virtual radio site STA.
5. radio transmitting method according to claim 4, which is characterized in that the frame lattice of the wireless data message of the reconstruct
Formula includes: frame control field, Duration field, 1 field of address, 2 field of address, 3 field of address, frame number field, message
Content field and frame check field.
6. radio transmitting method according to claim 5, which is characterized in that when the network expansion node is wireless site
STA and when being virtual radio access point AP with the associated virtual radio interface of the network expansion node, the wireless transmission fills
Set with the associated virtual radio interface of the network expansion node be send address, with the network expansion node be receive address
The wireless data message is reconstructed, is specifically included:
The frame control field of the wireless data message of the radio transmitting device setting reconstruct is FROMDS type, 1 field of address
The MAC Address of the network expansion node is stored, 2 field of address and 3 field of address are stored closes with the network expansion node
The MAC Address of the virtual radio interface of connection, reconstructed frame sequence number field, the message content for copying received wireless data message are extremely reported
Literary content field generates the nothing of reconstruct according to the mac frame head information and message content field reconstructed frame check field of reconstruct message
Line data message.
7. radio transmitting method according to claim 5, which is characterized in that when the network expansion node is wireless access
Point AP and when being virtual radio site STA with the associated virtual radio interface of the network expansion node, the wireless transmission fills
Set with the associated virtual radio interface of the network expansion node be send address, with the network expansion node be receive address
The wireless data message is reconstructed, is specifically included:
The frame control field of the wireless data message of radio transmitting device setting reconstruct is TODS type, 1 field of address with
3 field of address stores the MAC Address of the network expansion node, and the storage of 2 field of address is associated with the network expansion node
Virtual radio interface MAC Address, reconstructed frame sequence number field copies the message content of received wireless data message to message
Content field generates the wireless of reconstruct according to the mac frame head information and message content field reconstructed frame check field of reconstruct message
Data message.
8. a kind of computer readable storage medium, which is characterized in that be stored with wireless biography on the computer readable storage medium
Defeated program realizes wireless transmission as claimed any one in claims 1 to 3 when the wireless transmission program is executed by processor
The step of method.
9. a kind of radio transmitting device, which is characterized in that including creating unit, virtual interface administrative unit, site management unit
With reconstruct transmission unit, in which:
Creating unit, it is described at least two virtual radio interfaces to be pre-created and at least one network expansion node is arranged
Network expansion node is used to receive sending with the node of each virtual radio interface conjunctionn and passes through the reconstruct transmission unit
The wireless data message sent is reconstructed, the virtual radio interface created is exported to virtual interface administrative unit, by each void
The quasi- associated nodal information of wireless interface is stored to site management unit；
Transmission unit is reconstructed, for parsing the wireless data message of each virtual radio interface, judges to receive described wireless
Whether the virtual radio interface of data message is the associated virtual radio interface of network expansion node in the site management unit；
If not the associated virtual radio interface of the network expansion node, connect with the associated virtual radio of network expansion node
Mouthful be send address, be to receive the address reconstruct wireless data message with the network expansion node, and by the wireless of reconstruct
Data message is sent to the network expansion node；
Virtual interface administrative unit, for storing the information of several virtual radio interfaces；
Site management unit, for storing and the nodal information of each virtual radio interface conjunctionn.
10. radio transmitting device according to claim 9, which is characterized in that it is described reconstruct transmission unit with the net
It is to send address, take the network expansion node as the reception address reconstruct nothing that network, which expands the associated virtual radio interface of node,
Line data message, further includes:
It is set according to the type of the type of the associated virtual radio interface of the network expansion node and the network expansion node
Set the frame control field of the wireless data message.
11. radio transmitting device according to claim 9, which is characterized in that it is described reconstruct transmission unit with the net
It is to send address, take the network expansion node as the reception address reconstruct nothing that network, which expands the associated virtual radio interface of node,
Line data message, further includes:
According between the associated virtual radio interface of the network expansion node and the network expansion node cipher mode,
Encrypted fields and cryptographic check information generate the wireless data message of encryption.
12. according to the described in any item radio transmitting devices of claim 9-11, which is characterized in that at least two virtual nothing
Line interface be following any one: at least two virtual radio access point AP, at least two virtual radio site STAs, at least one
A virtual radio access point AP and at least one virtual radio site STA.
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| CN114158036A (en) * | 2021-12-06 | 2022-03-08 | 成都飞鱼星科技股份有限公司 | Method, device, system and medium for configuring and managing AP |
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